So no muscles or sinews or anything of the sort is even given any attention to whatsoever.

Thank you, Graham!

Even in the "skin is structure" model - there is nothing in the body. No bones, no muscles, no tendons, no fascia... I mean where do we stop with those kinds of descriptions? Because if we've gotten all the way down to fascia - why stop there. Let's keep going! Chemical elements, atoms, neutrinos, protons, electrons, quarks, strings - oh, strings of what? Energy? Oh, snap. There's that energy stuff again.